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Audi S4 Performance Parts & Upgrades

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Stage 3+ Clutch Kit

ES#3090774 - SA603F - Stage 3+ Clutch Kit - Features a full faced, carbon semi-metallic disc with a torque rating of 506 ft/lbs - Spec Clutches - Audi

Features a full faced, carbon semi-metallic disc with a torque rating of 506 ft/lbs affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Spec Clutches - Corporate Logo
ES#:
3090774
Mfg#:
SA603F
Ships in 3 Business Days
$629.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front V5 Drilled & Slotted Brake Rotors - Set (321x30)

ES#4668251 - 8E0615301AD-XS - Front V5 Drilled & Slotted Brake Rotors - Set (321x30) - Precision manufactured for consistent stopping power during high performance driving. Featuring a matte black zinc coating for corrosion protection. - ECS - Audi

Precision manufactured for consistent stopping power during high performance driving. Featuring a matte black zinc coating for corrosion protection. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4668251
Mfg#:
8E0615301AD-XS
Ships in 5 Business Days
ON SALE!
$430.99

This product was last offered at the strikethrough price on
06-13-2026

$418.05 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8/B8.5 A4 and S4 Rear Adjustable Sway Bar

ES#4027350 - 022845ecs01KT - Audi B8/B8.5 A4 and S4 Rear Adjustable Sway Bar - Reduce body roll and increase cornering speed - ECS - Audi

Reduce body roll and increase cornering speed affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4027350
Mfg#:
022845ECS01KT
In Stock
ON SALE! SAVE 10%
$346.99

This product was last offered at the strikethrough price on
06-13-2026

$312.29 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Apex IE Performance ECU Tune - Includes TCU Tune & POWERlink Cable

ES#3706799 - iesocgjtcu - Apex IE Performance ECU Tune - Includes TCU Tune & POWERlink Cable - Average gain of 131 horsepower and 136 lb-ft of torque on 91 Octane - Integrated Engineering - Audi

Average gain of 131 horsepower and 136 lb-ft of torque on 91 Octane affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
Perform tune in minutes from the comfort of your own driveway! Only available for purchase in the United States and Canada.
For vehicles with DSG transmission only

Brand:
Integrated Engineering - Corporate Logo
ES#:
3706799
Mfg#:
IESOCGJTCU
In Stock
$1248.99 USD
Free Shipping

Performance Snub Mount

ES#2597993 - 001577ECS01A - Performance Snub Mount - Reduce driveline lash with a full polyurethane mount - ECS - Audi Volkswagen

Reduce driveline lash with a full polyurethane mount affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2597993
Mfg#:
001577ECS01A
In Stock
ON SALE! SAVE 25%
$78.99

This product was last offered at the strikethrough price on
06-13-2026

$59.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Big Brake Kit - Stage 4 - 2-Piece Cross Drilled & Slotted Rotors (352x32)

ES#3082393 - B5S4S4BBKRXSKT - Front Big Brake Kit - Stage 4 - 2-Piece Cross Drilled & Slotted Rotors (352x32) - For customers with existing 18z calipers, brake pads, & fluid - ECS - Audi

For customers with existing 18z calipers, brake pads, & fluid affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Does not include calipers, brake pads, or brake fluid

Brand:
ECS - Corporate Logo
ES#:
3082393
Mfg#:
B5S4S4BBKRXSKT
In Stock at Vendor
ON SALE!
$1305.99

This product was last offered at the strikethrough price on
06-13-2026

$1240.69 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 A4/S4 Master LED Interior Lighting Kit - Red

ES#3137465 - 019396ECS01KT - Audi B8 A4/S4 Master LED Interior Lighting Kit - Red - Transform your complete interior in minutes with new LED interior bulbs from Ziza - ZiZa - Audi

Transform your complete interior in minutes with new LED interior bulbs from Ziza affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ZiZa - Corporate Logo
ES#:
3137465
Mfg#:
019396ECS01KT
In Stock
ON SALE! SAVE 50%
$117.99

This product was last offered at the strikethrough price on
05-02-2026

$59.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 2 Endurance Clutch Kit

ES#3106549 - ks4b8hdofeKT - Stage 2 Endurance Clutch Kit - Designed for track use while still streetable. Conservatively rated at 430ft/lbs. - South Bend Clutch - Audi

Designed for track use while still streetable. Conservatively rated at 430ft/lbs. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
South Bend Clutch - Corporate Logo
ES#:
3106549
Mfg#:
KS4B8HDOFEKT
In Stock
$1237.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 3 Endurance Clutch Kit

ES#3106510 - k70286sstzKT - Stage 3 Endurance Clutch Kit - Designed for dedicated track cars. Conservatively rated at 500ft/lbs. - South Bend Clutch - Audi

Designed for dedicated track cars. Conservatively rated at 500ft/lbs. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Recommended to be used with South Bend Flywheel SBC0504

Brand:
South Bend Clutch - Corporate Logo
ES#:
3106510
Mfg#:
K70286SSTZKT
Ships in 1 Business Day
$1237.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Lower Control Arm M14 Hardware Kit for B8/B8.5 Audi A4/S4/RS4, A5/S5/RS5, Q5/SQ5, C7/C7.5 A6/S6/RS6, A7/S7/RS7, & 95B Porsche Macan

ES#4880758 - 034-401-H005 - Lower Control Arm M14 Hardware Kit for B8/B8.5 Audi A4/S4/RS4, A5/S5/RS5, Q5/SQ5, C7/C7.5 A6/S6/RS6, A7/S7/RS7, & 95B Porsche Macan - This hardware kit contains all hardware required to install a lower front control arm kit for late model B8.5/C7.5 vehicles with M14 hardware. All hardware is high-quality OEM plated. - 034Motorsport - Audi

This hardware kit contains all hardware required to install a lower front control arm kit for late model B8.5/C7.5 vehicles with M14 hardware. All hardware is high-quality OEM plated. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4880758
Mfg#:
034-401-H005
Back Ordered
Auto Notify
$82.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Magnetic Engine Oil Drain Plug

ES#2749259 - 003365ECS01 - Magnetic Engine Oil Drain Plug - Capture harmful particles to prevent wear. M24x1.5 - ECS - Audi Volkswagen

Capture harmful particles to prevent wear. M24x1.5 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2749259
Mfg#:
003365ECS01
In Stock
ON SALE! SAVE 25%
$40.99

This product was last offered at the strikethrough price on
06-13-2026

$30.74 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

DR Series Wheel Spacers (Black) - 10mm (Pair) - Version 2

ES#2731176 - 2055571BSW - DR Series Wheel Spacers (Black) - 10mm (Pair) - Version 2 - Fine tune your stance and improve handling - H&R - Audi Volkswagen

Fine tune your stance and improve handling affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
H&R - Corporate Logo
ES#:
2731176
Mfg#:
2055571BSW
Ships in 3 Business Days
$109.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Exact-Fit Stainless Steel Brake Lines

ES#250735 - ECS41054KT - Front Exact-Fit Stainless Steel Brake Lines - Front set of DOT-compliant lines for an improved pedal feel - ECS - Audi

Front set of DOT-compliant lines for an improved pedal feel affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
250735
Mfg#:
ECS41054KT
In Stock
ON SALE! SAVE 15%
$100.99

This product was last offered at the strikethrough price on
06-13-2026

$85.84 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

DRA Series Wheel Spacer - 20mm (1 Pair)

ES#5111 - 40555712 - DRA Series Wheel Spacer - 20mm (1 Pair) - Fine tune your stance and improve handling - H&R - Audi Volkswagen

Fine tune your stance and improve handling affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
H&R - Corporate Logo
ES#:
5111
Mfg#:
40555712
Ships in 3 Business Days
$149.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Burger Motorsports JB4 Tuner

ES#3639972 - JB4-B9-S4S5 - Burger Motorsports JB4 Tuner - This easy to install plug and play tuner attaches to sensors in the engine bay and works with your factory ECU tuning to remap boost, timing, and fueling for optimal performance and reduced turbo lag. - Burger Motorsports - Audi

This easy to install plug and play tuner attaches to sensors in the engine bay and works with your factory ECU tuning to remap boost, timing, and fueling for optimal performance and reduced turbo lag. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Not for sale or use in the state of California.

Brand:
Burger Motorsports - Corporate Logo
ES#:
3639972
Mfg#:
JB4-B9-S4S5
Ships on Jul 8, 2026
$599.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Ignition Service Kit

ES#4475297 - 06M905606F3KT - Performance Ignition Service Kit - Includes six Grey APR coil packs and OEM spark plugs to service your ignition system - Assembled By ECS - Audi

Includes six Grey APR coil packs and OEM spark plugs to service your ignition system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4475297
Mfg#:
06M905606F3KT
In Stock
$398.63 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

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